Which Seattle Mariners player holds the record for most home runs in a single season?
Edgar Martinez
Ken Griffey Jr.
Alex Rodriguez
Jay Buhner
Answer
Ken Griffey Jr. holds the Seattle Mariners' record for most home runs in a single season, hitting 56 home runs in both the 1997 and 1998 seasons. Griffey Jr. is a Hall of Fame outfielder and one of the most iconic players in Mariners' history.
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